COIS
| Acronym | Definition |
|---|---|
| COIS | Council of International Schools (Hampshire, UK) |
| COIS | Coaching Operation Information System (India) |
| COIS | Combat Operations Intelligence System |
| COIS | Computer Operations and Information Services (University of California, Berkeley) |
| COIS | Corporate Operations Information Services |
| COIS | Cross of Iron Sturmtruppe (gaming clan) |
| COIS | Country of Origin Service (UK) |